Electromagnetic signal processor forming localized regions of magnetic wave energy in gyro-magnetic material
AssigneeMassachusetts Institute of Technology
InventorsFrederic R. Morgenthaler, Dale A. Zeskind
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Abstract
A signal processing filter wherein electromagnetic wave energy is coupled into a magnetic material at a first region of the surface of the magnetic material and is coupled from the material at a second region of the surface after having propagated within the material as magnetic wave energy. The filter parameters serve to confine the electromagnetic wave energy to a small, localized region of the magnetic material and regional confinement of the magnetic wave energy is also achieved.
Claims53
Apparatus for processing electromagnetic wave energy, that comprises, a gyromagnetic material capable of converting electromagnetic excitation wave energy to magnetic wave energy therein, means for exciting the gyromagnetic material with electromagnetic wave energy for conversion to magnetic wave energy in the material, means for applying a magnetic field to the gyromagnetic material and creating therein a non-uniform internal magnetic field profile having a predetermined magnetic field gradient sufficient to confine magnetic wave energy in the material to at least one localized region of the gyromagnetic material that has a dimension that is small relative to the corresponding dimension of the material, and means for extracting from the gyromagnetic material electromagnetic wave energy that has been proposed as the result of the confinement of the magnetic wave energy in the gyromagnetic material.
Apparatus for processing electromagnetic wave energy, that comprises, a gyromagnetic material capable of converting electromagnetic excitation wave energy to magnetic wave energy therein, means for introducing electromagnetic excitation wave energy to the gyromagnetic material for conversion to magnetic wave energy in the material, means for applying a magnetic field to the gyromagnetic material and creating therein a non-uniform internal magnetic field profile having a predetermined field gradient sufficient to control at least one magnetic wave energy parameter in the gyromagnetic material by field gradient confinement of magnetic wave energy in the material to at least one localized region of the gyromagnetic material having a dimension that is small relative to the corresponding dimension of the material, and means for extracting from the gyromagnetic material electromagnetic wave energy that has been processed as the result of the control of said parameter in the gyromagnetic material.
A method of processing electromagnetic wave energy utilizing a gyromagnetic material capable of converting electromagnetic excitation wave energy to magnetic wave energy therein, which comprises introducing electromagnetic excitation wave energy to the gyromagnetic material and converting that wave energy to magnetic wave energy in the material, applying a magnetic field to the gyromagnetic material and creating therein a non-uniform internal magnetic field profile having a predetermined field gradient sufficient to control at least one magnetic wave energy parameter in the gyromagnetic material by field gradient confinement of magnetic wave energy in the material to at least one localized region of the gyromagnetic material having a dimension that is small relative to the corresponding dimension of the material, and extracting from the gyromagnetic material electromagnetic wave energy that has been processed as the result of the control of said parameter in the gyromagnetic material.
Dependencies are inferred from the claim text.